public class Main {
    private static int count = 0;
    public static void main(String[] args) throws InterruptedException {
        Object locker1 = new Object();
        Object locker2 = new Object();
        Thread t1 = new Thread(() -> {
           for(int i =0; i<1000; i++){
               synchronized (locker1){
                   count++;
               }
           }
        });
        Thread t2 = new Thread(() -> {
            for(int i =0; i<1000; i++){
                synchronized (locker2){
                    count++;
                }
            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();
    }
}

